js_reverse/夜幕js逆向练习题/夜幕-第9课练习题使用代码压缩技术对Javascript 代码进行混淆/key测试.js

function uuid() {
    var s = [];
    var hexDigits = "0123456789abcdefghijklmnopqrstuvwxyz";
    for (var i = 0; i < 36; i++) {
        s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
    }
    s[14] = "4";
    s[19] = hexDigits.substr((s[19] & 0x3) | 0x8, 1);
    s[8] = s[13] = s[18] = s[23] = "-";
    var uuid = s.join("");
    return uuid;
}

uuid_res = uuid();

console.log(uuid_res);